The project includes a control which
extends the FilteringSelected control which comes with the XPages Extension
Library. Watch the video
to see the control in action. Below is Ferry's description:

"This widget adds some nice features
to the dojo FilteringSelect:- serverside paging support, so any
big and slow view could be connected with this widget- display multiple view columns in the
dropdown result list- a loading indicator while view chunks
getting fetched- the selected value is put inside a
box making it easy to remove with one mouse click- the selected value could also be clicked
to put it in edit mode again"